单项选择题

What________ have the Health Authorities taken to prevent the epidemic spreading

A．steps
B．plans
C．paces
D．grounds
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单项选择题
No agreement was reached in the discussion as neither side would give way to________.
A．the other
B．any other
C．another
D．other
单项选择题
I tried very hard to persuade him to join our group but I met with a________ refusal.
A．flat
B．dull
C．blank
D．frank
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